[DragonFlyBSD - Bug #2249] deadlock under high i/o load (e.g. hammer reblock)

Antonio M. Huete Jimenez via Redmine bugtracker-admin at leaf.dragonflybsd.org
Mon Nov 28 14:26:47 PST 2011

Issue #2249 has been updated by Antonio M. Huete Jimenez.

Hi Rumko,

I see your kern.0 is 7.5K, bad upload or bad dump?

-rw-r--r--  1 rumko  wheel   231K Nov 28 13:51 core.txt.0
-rw-------  1 rumko  wheel   465B Nov 28 13:50 info.0
-rw-r--r--  1 rumko  wheel   7.5K Nov 28 13:50 kern.0
-rw-------  1 rumko  wheel   407M Nov 28 13:51 vmcore.0

Antonio Huete
Bug #2249: deadlock under high i/o load (e.g. hammer reblock)

Author: Rumko Rumko
Status: New
Priority: Normal
Target version: 

Almost latest master (last commit from upstream should be

Whenever nightly cron runs and a few minutes after hammer cleanup starts doing
it's job, the machine becomes mostly unresponsive (most processes and most ssh
connections stop responding, but strangely pf still continues doing it's job).

Fortunately debugging through serial console still worked, so the dump is
available at leaf:~rumko/crash/deadlock/*.0 .
Please do not CC me, since I already receive everything from these MLs.


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